Monday, July26, 2021
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Marine Weather and Tides
Huntington, VA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:03AMSunset 8:26PM Monday July 26, 2021 8:22 PM EDT (00:22 UTC) Moonrise 9:32PMMoonset 7:38AM Illumination 93% Phase: Waning Gibbous; Moon at 17 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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ANZ535 Tidal Potomac From Key Bridge To Indian Head- 737 Pm Edt Mon Jul 26 2021
Tonight..S winds around 5 kt. Waves 1 ft. A slight chance of tstms. A chance of showers, mainly this evening.
Tue..W winds around 5 kt. Waves 1 ft.
Tue night..SW winds around 5 kt. Waves 1 ft.
Wed..NW winds around 5 kt. Waves 1 ft.
Wed night..SE winds around 5 kt. Waves 1 ft.
Thu..SW winds around 5 kt. Waves 1 ft. A chance of showers.
Thu night..W winds 5 kt. Waves less than 1 ft. A chance of showers.
Fri..N winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning.
Sat..NW winds 5 to 10 kt...becoming s. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 737 Pm Edt Mon Jul 26 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will push south across the area today, stalling out over the carolinas through Tuesday night as weak high pressure builds back into the region. A weak front will drop across the waters Wednesday before a more potent cold front sweeps through the area Thursday into Friday. Small craft advisories may be required for portions of the waters Thursday through Friday.


7 Day Forecast for Marine Location Near Huntington, VA
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location: 38.79, -77.07     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 261839 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 239 PM EDT Mon Jul 26 2021

SYNOPSIS.

A weak cold front will stall out over central Virginia into southern Maryland through Tuesday. Another weak cold front will approach from the north Wednesday while an upper-level disturbance passes through. A stronger cold front will pass through late Thursday into early Friday and high pressure will build overhead for Saturday before moving offshore Sunday.

NEAR TERM /THROUGH TONIGHT/.

A cold front has dropped south through our region from PA this afternoon and is currently located over parts central Virginia. Storms and showers have formed along and south of the front this afternoon with a one storm having already becoming severe. The Storm Prediction Center has issued SVR watch 392 for large portions of southern and central Virginia including Nelson and Albemarle counties from our forecast area. A combination of warm and humid conditions along and ahead of the front combined with modest CAPE will lead a threat for large hail and damaging winds. The main threat for strong to severe storms will be areas along and south of I-64 but I can't rule out a few stronger storms from forming north of the front this evening. Showers and thunderstorms will continue to be a threat this evening and coverage should start to lesson later this evening. Some CAM's indicate that showers and storms could reform further north over the DC metro this evening but confidence remains low on this threat especially with a northwesterly flow. PW's will be close to 2 inches ahead of the front that Flash Flooding will be a concern especially down in parts of Nelson and Augusta counties that have receive precipitation the past few nights.

As the front progresses further north later this evening, the threat for strong storms and flash flooding will start to diminish as drier air slowly builds our region. Skies will become mostly clear overnight with winds becoming light out of the south. Fog will likely be a concern for areas down in central Virginia where precipitation will occur this afternoon. Overnight lows will be near to slight above normal in the 60s to lower 70s.

SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/.

High pressure will briefly build into our region on Tuesday with light winds continuing out of the north. An upper trough north of the Great Lakes is expected to drop south into PA. Shortwave energy along the southern parts of the trough may produce some isolated showers on Tuesday. I believe the threat remains relatively for showers on Tuesday especially with a continued northwesterly flow aloft advecting in drier air into the region. The combination of mostly clear skies along with a light flow will allow temps to rise up into the low to mid 90s on Tuesday. Typically as we get temps up into the mid 90s, the heat indices will become an issue but the lack of moisture advection will limit heat indexes to the 90s.

An upper level ridge will build over the central US Tuesday through Wednesday with a trough axis over the NE US. The positioning of the upper ridge will place our region in favorable location to allow for shortwaves to move over the ridge and drop down into our region. These shortwaves combined with a front approaching from the north may allow for showers and thunderstorms to form over the northern half of our CWA especially considering that temps will be hovering in the 90s. The main limiting factor for storm development will be the lack of good moisture in place on Wednesday. Afternoon temps be warm once again in the low to mid 90s. A marginal risk for SVR weather has been issued by SPC for areas along the MD/PA border for Wednesday due to the combination of shortwaves and a front slowly approaching from the north.

LONG TERM /THURSDAY THROUGH MONDAY/.

An upper-level trough will strengthen over New England Thursday and Friday while the trough axis extends down through the Mid-Atlantic. A potent upper-level disturbance and jetmax associated with the trough will dig into New England during this time, and this will allow for a stronger cold front to approach Thursday before passing through Thursday night into Friday.

There will be some return flow ahead of the frontal passage which will allow for instability to develop. At the same time, moderate shear profiles are expected due to stronger northwest winds aloft associated with the upper-level trough and lower heights. Steep low- level lapse rates, increasing instability, stronger shear and forcing from the cold front suggests that thunderstorms are possible, and some storms may be severe. The best chance for severe appears to be Thursday afternoon and evening, but timing could shift depending on exactly when the cold front passes through.

The cold front will continue to push to the south for Friday into Friday night. However, the boundary could get hung up across our extreme southern zones for a period Friday, so a shower or thunderstorm is possible across those areas, but for most areas it will turn out less humid and dry.

High pressure will build overhead Friday night and Saturday, bringing dry and cooler conditions along with lower humidity. The high will move offshore for Sunday and warmer air will return.

AVIATION /19Z MONDAY THROUGH SATURDAY/.

Showers and thunderstorms will mainly impact the CHO terminal this afternoon and evening causing possible MVFR to IFR restrictions. Storms will have the potential to produce gusty winds and large hail through this evening for CHO terminal. Showers or thunderstorms can't be ruled out for the DC metro terminals this evening but confidence remains low. VFR conditions should return Tuesday and Wednesday for all terminals but fog will be possible for the CHO terminal late this evening and into Tuesday morning.

A cold front will pass through late Thursday into early Friday. A few thunderstorms are possible ahead of the boundary, especially Thursday afternoon and evening. Some storms may become severe, with damaging winds being the primary threat.

The boundary will push to the south for Friday, but it may get hung up close to KCHO. An isolated storm near KCHO is possible, but other areas should be dry with northwest winds.

MARINE.

Small Craft Advisories are not expected through Wednesday but showers and thunderstorms may impact our southern bay waters this evening.

A cold front will approach the waters Thursday before passing through Thursday night into Friday. Winds may approach SCA criteria ahead of the front late Thursday into Thursday night (from southerly winds), and again behind the front late Thursday night and Friday (from northwest winds).

A few thunderstorms are possible Thursday afternoon and evening, and some may produce gusty winds. An isolated t-storm near the extreme southern portion of the waters around Tangier Island cannot be completely ruled out Friday afternoon, but most places will be dry.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . None.

SYNOPSIS . BJL NEAR TERM . JMG SHORT TERM . JMG LONG TERM . BJL AVIATION . BJL/JMG MARINE . BJL/JMG TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 6 mi52 min N 11 G 20 80°F 83°F1012.7 hPa
BSLM2 - Chesapeake Bay, MD 19 mi52 min SE 1.9 83°F 1012 hPa74°F
NCDV2 33 mi52 min SSE 5.1 G 6 85°F 86°F1011.9 hPa
APAM2 - 8575512 - Annapolis, MD 34 mi52 min NW 2.9 G 4.1 86°F 84°F1012.6 hPa
TPLM2 - Thomas Point, MD 34 mi82 min SSE 7 G 8 83°F 80°F1013.2 hPa (-0.6)68°F
44063 - Annapolis 35 mi46 min Calm G 1.9 82°F 82°F1 ft1013.9 hPa
44062 - Gooses Reef, MD 38 mi52 min SE 1.9 G 1.9 83°F 82°F1013.6 hPa
CPVM2 39 mi52 min 83°F 74°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 41 mi52 min S 6 G 7 81°F 1012.9 hPa
FSNM2 41 mi52 min SE 4.1 G 5.1 84°F 1013.1 hPa
BLTM2 - 8574680 - Baltimore, MD 42 mi52 min SSW 1.9 G 2.9 81°F 83°F1012.8 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 45 mi52 min ESE 7 G 8 83°F 1012.6 hPa
SLIM2 - 8577330 - Solomons Island, MD 46 mi52 min SSW 6 G 7 84°F 84°F1012.5 hPa

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Washington/Reagan National Airport, DC, VA5 mi90 minSE 1010.00 miThunderstorm in Vicinity87°F69°F55%1012.1 hPa
Fort Belvoir, VA7 mi26 minN 87.00 miThunderstorm Heavy Rain85°F75°F72%1013.7 hPa
Camp Springs / Andrews Air Force Base, MD11 mi26 minN 810.00 miThunderstorm Light Rain78°F71°F77%1012.9 hPa
College Park Airport, MD15 mi47 minN 07.00 miOvercast75°F72°F89%1013.9 hPa
Washington/Dulles International Airport, DC, VA23 mi30 minE 8 G 1810.00 miThunderstorm81°F68°F65%1012.8 hPa
Quantico Marine Corps Airfield - Turner Field, VA23 mi26 minSSE 77.00 miPartly Cloudy86°F73°F65%1012.6 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA24 mi26 minW 83.00 miThunderstorm Heavy Rain Fog/Mist72°F70°F94%1014.6 hPa

Link to 5 minute data for KDCA

Wind History from DCA (wind in knots)
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Last 24hrS9S7S8S6SW8SW7SW6SW6SW6S4S3S4S4CalmN8N5NE45E4N5Calm3E11SE10
1 day agoS10S13S14S12S8S11S12
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2 days agoSE7SE6S4SE4SW3SW5SW4SW3S3CalmSW3CalmCalmS5S8S6S8S8S8S10S12SE12
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Tide / Current Tables for Alexandria, Virginia
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Alexandria
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Mon -- 04:48 AM EDT     0.14 feet Low Tide
Mon -- 06:04 AM EDT     Sunrise
Mon -- 08:37 AM EDT     Moonset
Mon -- 10:34 AM EDT     3.41 feet High Tide
Mon -- 05:27 PM EDT     0.03 feet Low Tide
Mon -- 08:24 PM EDT     Sunset
Mon -- 10:31 PM EDT     Moonrise
Mon -- 11:07 PM EDT     3.13 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.51.91.20.70.30.20.51.32.22.93.33.432.31.71.10.50.10.10.71.52.32.93.1

Tide / Current Tables for Washington, Potomac River, D.C.
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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